Altitude Band
Placing the cursor over the band select line in
the RMU TCAS window, (Figure 16-53) allows
the operator to select between three different
bands with the RMU tuning knob:
• NORMAL – The TCAS displays traffic
between 2,700 feet above to 2,700 feet
below the current altitude.
• ABOVE – The TCAS displays traffic be-
tween 7,000 feet above to 2,700 feet
below the current altitude.
• BELOW – The TCAS displays traffic
between 2,700 feet above to 7,000 feet
below the current altitude.
The band selected annunciates in the TCAS
window of the RMU and also in the top left cor-
ner of the TCAS display.
TCAS TA Display Symbols
The traffic symbols on the TCAS display meet
the industry standard and are as depicted in
Table 16-9. Table 16-10 details voice an-
nouncements.
If the depicted traffic is reporting altitude and
is climbing or descending at a rate of at least
500 feet per minute, a trend arrow is displayed
beside the traffic symbol indicating that the
airplane is climbing or descending. If the in-
truder is not reporting altitude, the traffic sym-
bol appears without an altitude tag or trend
arrow.
A maximum of twelve (12) symbols can be dis-
played at one time (including two without
bearing).
Should TCAS direction-finding techniques
fail to determine the azimuth of an intruder a
“NO BEARING” message is displayed in the
top right corner of the TCAS display (Figures
16-55 and 16-56).
RA Displays
The RA displays are incorporated into the ver-
tical speed indicator on the PFDs (Figure 16-
57). Green “fly-to” zones and red “no-fly”
zones are placed on the vertical speed arc by
the TCAS for collision avoidance. The zones
are not displayed on the arc until the TCAS de-
tects a RA intruder and computes the collision
avoidance data.
L E A R J E T 4 5
P I L O T T R A I N I N G M A N U A L
16-103
FOR TRAINING PURPOSES ONLY
FlightSafety
international
Figure 16-57. TCAS Symbology on PFD
TCAS "FLY TO" ZONE
(GREEN)
VERTICAL SPEED
IN RED BAND
(POINTER - RED)
(DIGITS - RED)
(NOT IN RED BAND)
(POINTER - WHITE)
(DIGITS - WHITE)
TCAS RA BAND
"NO FLY"
(RED)
TCAS II MODE
ANNUNCIATIONS
(TCAS TEST - WHITE)
(TCAS FAIL - AMBER)
(TCAS OFF - WHITE)
(TA ONLY - WHITE)
(RA FAIL - AMBER/RED)
(TCAS INOP - WHITE)
TCAS I MODE
ANNUNCIATIONS
(TCAS FAIL - AMBER)
(TCAS OFF - WHITE)
(TA ONLY - WHITE)
(TCAS INOP - AMBER)
0
1000
1
2
3
1
2
3
TCAS
TEST